Green Global
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IMPACT OF AQUA DRUGS ON HEALTH OF FARM FISHES OF PUTHIA UPAZILA, RAJSHAHI (Pages : 22 - 28)
G.U. AHMED, S. SHAMS, T. YEASMIN AND M.F.U. ZAMANThe present study was carried out for a period of nine months from September 2015 to May 2016. Twenty five fish farms of Puthia upazila under Rajshahi district were selected to observe the present status of use of commercial aqua drugs and their impact on fish health. Data were collected through questionnaire interview with fish farmers, drug sellers, personal contact and market survey. Eight categories of aqua drugs were observed as pond preparation, water quality management, disinfectant, disease treatment, antibiotics, growth promoter, insect killer and improvement of dissolve oxygen level. In the investigated area various types of diseases such as EUS (epizotic ulcerative syndrom), red spots and ulcers in rohu (Labeo rohita), catla (Gibelion catla) and mrigal (Cirrhinus cirrhosus), kalibaush (Labeo calbasu) and silver carp (Hypophthalmicthys molitrix), tail and fin rot in silver berb (Puntius sarana), lernaesis and exophthalmia in catla were observed. Farmers used various aqua drugs and chemicals such as Pond care, Zeopel, Novazeolite, Yuka, Acimec-1%, GPC-8, KZ fish vita, Renamycin, Timsen, Aquamysine, Deletix, Bio-ox, Oxy-gold, Oxymore, Eska-CTC, Renaflox, Renamox, Aqua-boost, Sumithione and Virex as trade names for disease and health problems of their cultured fishes. The results revealed that aqua drugs had a definite impact on the recovery of fish diseases (60 to 90%) in various culture fishes of the study area. Clinically fishes were found to be normal in the month of October, whereas, whitish deep ulcer was found in the month of January. Histologically, skin-muscle, gill, liver and kidney of the investigated fishes were found almost normal structure during October, whereas, there were some pathological changes like necrosis, vacuums, hemorrhage, pyknosis, hypertrophy and lamellar missing in December and January. From the present study, it could be stated that, aqua drugs had positive impact on aquaculture production except some pathological changes in thDownload